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- 优化 ToAggregate 执行时忽略已设置的 OrderBy；

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This commit is contained in:
28810 2020-10-13 09:52:19 +08:00
parent e777e7e86f
commit e1a265f7aa
1 changed files with 28 additions and 10 deletions
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18
FreeSql/Internal/CommonProvider/SelectProvider/Select0ProviderReader.cs
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@ -710,6 +710,10 @@ namespace FreeSql.Internal.CommonProvider
}
protected TReturn InternalToAggregate<TReturn>(Expression select)
{
var tmpOrderBy = _orderby;
_orderby = null; //解决 select count(1) from t order by id 这样的 SQL 错误
try
{
var map = new ReadAnonymousTypeInfo();
var field = new StringBuilder();
@ -718,6 +722,11 @@ namespace FreeSql.Internal.CommonProvider
_commonExpression.ReadAnonymousField(_tables, field, map, ref index, select, null, null, _whereCascadeExpression, null, false); //不走 DTO 映射，不处理 IncludeMany
return this.ToListMapReader<TReturn>(new ReadAnonymousTypeAfInfo(map, field.Length > 0 ? field.Remove(0, 2).ToString() : null)).FirstOrDefault();
}
finally
{
_orderby = tmpOrderBy;
}
}
public TSelect InternalWhere(Expression exp) => exp == null ? this as TSelect : this.Where(_commonExpression.ExpressionWhereLambda(_tables, exp, null, _whereCascadeExpression, _params));
@ -966,6 +975,10 @@ namespace FreeSql.Internal.CommonProvider
}
async protected Task<TReturn> InternalToAggregateAsync<TReturn>(Expression select)
{
var tmpOrderBy = _orderby;
_orderby = null; //解决 select count(1) from t order by id 这样的 SQL 错误
try
{
var map = new ReadAnonymousTypeInfo();
var field = new StringBuilder();
@ -974,6 +987,11 @@ namespace FreeSql.Internal.CommonProvider
_commonExpression.ReadAnonymousField(_tables, field, map, ref index, select, null, null, _whereCascadeExpression, null, false); //不走 DTO 映射，不处理 IncludeMany
return (await this.ToListMapReaderAsync<TReturn>(new ReadAnonymousTypeAfInfo(map, field.Length > 0 ? field.Remove(0, 2).ToString() : null))).FirstOrDefault();
}
finally
{
_orderby = tmpOrderBy;
}
}
#endif
#endregion
}